In this first of two articles, we discuss some issues surrounding the dissolution rate enhancement of poorly-soluble active ingredients micronized into nano-particles using several supercritical fluid particle design processes including rapid expansion of supercritical solutions (RESS), supercritical anti-solvent (SAS) and particles from gas-saturated solutions/suspensions (PGSS). Experimental ...

The purpose of this study was to develop a new use for microbial cellulose produced by the bacterium, Acetobacter xylinum. There is a potential application of bacterial cellulose to construct a nano-scale laminar flow reactor. Small particles (i.e. enzymes or solid phase reactants) can be embedded in a growing cellulose matrix with geographic specificity. A fluid containing a substrate can then...

Many physical problems require explicit knowledge of the equilibrium shape of the interface between two fluid phases. Here, we present a new numerical method which is simply implementable and easily adaptable for a wide range of problems involving capillary deformations of fluid-fluid interfaces. We apply a simulated annealing algorithm to find the interface shape that minimizes the thermodynam...

in order to study of nutritional role of silicon nano-particles on physiological characteristics of minituber potato production an experiment was carried out as  factorial based on randomized complete blocks design with three replications in hydroponic culture at ferdowsi university, mashhad. treatments were included particle size of sodium silicate (nano and micro) and concentrations in levels...

Submit Manuscript | http://medcraveonline.com Compound Parabolic Concentrator; DCPC: Dielectric Photovoltaic Thermal Compound Parabolic Concentrator; Aa: Aperture Area; Ar: Receiver of Area; HTF: Heat Transfer Fluid; DTIRC: Dielectric Totally Internally Reflecting Concentrator; TIR: Total Internal Reflection; MSDTIRC: Mirror Symmetrical Dielectric Totally Internally Reflecting Concentrator; FHC...

Abstract It is a well-known fact that functional effects like relaxation and retardation of materials, heat transfer phenomena occur in wide range industrial engineering problems. In this context, mathematical model developed the view Caputo fractional derivative for Oldroyd-B nano-fluid. Nano-sized particles copper (Cu) are used to prepare nano-fluid taking water as base fluid. The coupled non...

New types of porphyrin nano- and micro-particles composed of J- and H-heteroaggregates were prepared by electrostatic self-assembly of two oppositely charged porphyrins, tetrakis(4-trimethylammoniophenyl)porphyrin (H2TAPP4+) and tetrakis(4-sulfonatophenyl)porphyrin cobalt(II) (CoTPPS4-), in aqueous solutions. Transmission electron microscopy (TEM) images showed novel morphology and size distrib...

The objective of the present work is to conduct investigations leading to a more complete explanation of single phase natural convective heat transfer in an enclosure with fin utilizing nano fluids. The nano fluid used, which is composed of Aluminum oxide nano particles in suspension of Ethylene glycol, is provided at various volume fractions. The study is carried out numerically for a range of...

The present paper discusses the various effects of parameters like particle volume fraction, particle material, particle size, particle shape, particle material and base fluid, temperature, effect of acidity(PH) on thermal conductivity of nanofluids. And also discusses the different mechanisms of heat transfer enhancement like improvement in the thermal conductivity, effect of Brownian motion, ...

Submit Manuscript | http://medcraveonline.com Compound Parabolic Concentrator; DCPC: Dielectric Photovoltaic Thermal Compound Parabolic Concentrator; Aa: Aperture Area; Ar: Receiver of Area; HTF: Heat Transfer Fluid; DTIRC: Dielectric Totally Internally Reflecting Concentrator; TIR: Total Internal Reflection; MSDTIRC: Mirror Symmetrical Dielectric Totally Internally Reflecting Concentrator; FHC...